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M N H. m 1 C Patented Dec. 22, 1925.

cHARLns H. MeDoNALn, AoF Bimrinsvrrmn, oK'LjAHoM.

VALVE.4

Application 'led November 3, 1922. Serial No.y 598,803.

To all whom t may concern:

Be it known that I, CHARLES I-I. MG- DONALD, a citizen of the United States, residing at Bartlesville, in the county of l/Vashington and State of Oklahoma, have invented certainV new and useful Improve? ments in Valves, of which the'following is a specification.

This invention relates to valves, and more particularly to'standing valves for oil wells. 'An object of the invention is the provision of a standing valve which will tit in the bottom of the working barrel of an oil pump and which is provided with upper and lower valve members having a space between them for a body of oil to act as a seal.

A further object is the provision Vof a standing valve in which the lower Vvalve member will function properly and will not beinterfered with by the vacuum in the well casing orby gas contained in the oil.A

In the accompanying drawings, I have shown one embodiment `of the invention. In this showing:

Figure 1 is a vertical longitudinal sectional view of a well casing showing the invention applied,

igure 2 is a similar view of the standing valve removed,

Figure 3 is a horizontal sectional view on line 3 3 of Figure 2,

Figure 4 is a similar view on line 4 4 of Figure 2, and,

. Figure 5 is a similar view on line 5,-5 of Figure 2. 1

Referring to the drawings, the reference numeral 1 designates generally a well casing having a working barrel 2 arranged therein. A standing valve 3 is adaptedvto be secured to the lower end of the working barrel. As shown, the exterior of the standing valve is provided with a shoulder 4 and a plurality of packing rings 5 are arranged above the shoulder. VThese rings are adapted to fit snugly within the lower end of the working barrel to prevent passage of iuid between the outside of the standing valve and the working barrel. The standing valve is retained in position by means of a union 6. The upper end of the standing valve is provided with a cage 7 having the usual openings 8 to permit passage of fluid into the working barrel. A valve seat 9'is arranged in the bottom of the cage and a ball valve 10is placed in the cage and adapted to engage the valve seat. `The bottom ofthe standing valve'is provided with a portion 11 of greater diameter than the main por'- tion and apin 12 is arranged therein. -A valve seat 13 is arranged below this pin and is adapted to receive a ball valve 14. A gas anchor-15 issecured to the lower end of the 1 y standing valve. A perforated pipe 16 may be arranged around the standing valve, the pipe being provided wit'hvopenings 17 for the passage of oil.

In operation, a traveling valveV of the usual character is arranged in the working barrel abo-ve the standing valve.v On .the i up-stroke of the traveling valve, the balls 10 and 14'are lifted from their seats and the oil in the .standing valve passes into the working barrel. Additional oil then i'lows from the well through the perforations 17 into the working barrel. On the downstroke of the traveling valve, the balls 10 and' 14 engage their seats and the oil in the working valve is prevented from flowing back into the well. This provides a body of oil in the standing valve at all times which acts to positively force the lower valve 14 to its seat and further acts toform a vacuum in thestanding valve when it is drawn upwardly to positively open the lower valve. With the present types of standing valve, considerable diiiiculty has been encountered where a vacuum is maintained in the casing,

as this vacuum has a tendency to hold the,

lower valve on its seat against thevacuum created within' the standing valve, when the traveling valve moves upwardly. The rovision ofv a liquid seal between the two all y valves further provides a more positively operated valve, eliminating trouble due to gas contained in the oil.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, andV that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus described my invention, I claim: Y

A standing valve comprising an elongated integral body portion having a smooth cylindrical bore extending downwardly from its top throughout the greater portion of its length, the lower end of said body por-` nei; .y n v 1,566,613

tonhavng asmooth Cylindrical bore o cage. arranged above said body portion', a

greater diameter than that n the upperend Vvalveseat arranged between said cage and of said body'portoma'valve seatY arranged sadbody portion, and a valve arranged in 10 Vin said lower borefa valvenormally engagsaid cage and normally engaging said last ing said seat, a transverse pin vextending named seat.

l through said lower' bore above said valve vIn testimony WhereoLIaX my signature to limit the yupward movement thereof,v a CHARLES H. MGDONALD'.` 

